mmc: Change SDHCI iomem error to a warning

Some controllers report an invalid iomem size, but seem to work
correctly anyway. Change our current error to just a warning and
hope it doesn't cause too much problems.

Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
diff --git a/drivers/mmc/sdhci.c b/drivers/mmc/sdhci.c
index cd98117..c2d13d7 100644
--- a/drivers/mmc/sdhci.c
+++ b/drivers/mmc/sdhci.c
@@ -1170,8 +1170,8 @@
 	}
 
 	if (pci_resource_len(pdev, first_bar + slot) != 0x100) {
-		printk(KERN_ERR DRIVER_NAME ": Invalid iomem size. Aborting.\n");
-		return -ENODEV;
+		printk(KERN_ERR DRIVER_NAME ": Invalid iomem size. "
+			"You may experience problems.\n");
 	}
 
 	if ((pdev->class & 0x0000FF) == PCI_SDHCI_IFVENDOR) {